Yellow Bartsia Plant Care
Parentucellia viscosa (L.) Caruel
Updated · Sources · How we source care data
Parentucellia viscosa is a species of flowering plant in the family Orobanchaceae known by the common names yellow bartsia and yellow glandweed. It is native to Europe, but it can be found on other continents, including Australia and North America, as an introduced species.
Every 7–10 days
Full sun to partial shade
60–80°F
40–60%
At a glance
How do you care for Yellow Bartsia?
Water Yellow Bartsia every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–80°F (16–27°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
Where Is the Yellow Bartsia Native To?
- Albania
- Austria
- Belarus
- Belgium
- Bosnia and Herzegovina
- Bulgaria
- Croatia
- Cyprus
- Czechia
- Denmark
- Estonia
- Finland
- France
- Germany
- Greece
- Hungary
- Iceland
- Ireland
- Italy
- Latvia
- Lithuania
- Luxembourg
- Malta
- Moldova
- Montenegro
- North Macedonia
- Norway
- Poland
- Portugal
- Romania
- Russia
- Serbia
- Slovakia
- Slovenia
- Spain
- Sweden
- Switzerland
- The Netherlands
- Ukraine
- United Kingdom
What Is the Yellow Bartsia?
Yellow Bartsia (Parentucellia viscosa) belongs to the Orobanchaceae family within the Parentucellia genus. Yellow Bartsia is native to Europe. Yellow Bartsia is also known as Viscid Bartsia, Annual Bartsia.
Yellow Bartsia displays an upright, branching herb growth habit, reaching up to 1.5 ft tall with a spread of approximately 0.5 ft. Yellow Bartsia produces small tubular purple flowers in dense spikes.
Leaf size: approximately 2 inches.
How Often Should You Water a Yellow Bartsia?
Parentucellia viscosa requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Yellow Bartsia Need?
Yellow Bartsia thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Yellow Bartsia Prefer?
Parentucellia viscosa grows best at temperatures of 60–80°F. Yellow Bartsia prefers humidity levels of 40–60%.
Temperature
60–80°F
Humidity
40–60%
What Soil Mix Works Best for a Yellow Bartsia?
Well-draining sandy loam with added organic matter. Good drainage is essential for Yellow Bartsia to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Yellow Bartsia?
Feed Yellow Bartsia every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Yellow Bartsia?
Repot annually in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Yellow Bartsia?
Yellow Bartsia can be propagated through seeds. Similar propagation techniques also apply to glandular bartsia plant care, which shares the same genus.
Is the Yellow Bartsia Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Yellow Bartsia, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Yellow Bartsia?
Yellow Bartsia is susceptible to aphids, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Yellow Bartsia Need?
Yellow Bartsia grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Yellow Bartsia is native to Europe. In cooler regions, grow Yellow Bartsia as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Yellow Bartsia is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Parentucellia genus — compare its care with other Parentucellia species on PlantoScan.
Parentucellia is part of the Orobanchaceae plant family — browse all Orobanchaceae genera and species.
Yellow Bartsia thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Parentucellia viscosa (L.) Caruel, family Orobanchaceae (first published in Fl. Ital. 6: 482 (1885)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Yellow Bartsia, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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